Liner for bearings for polishing wheels and the like



Jan. 5, 1943; 2,307,386 LINER FOR BEARINGS FOR POLISHING WHEELS ND THE LIKE D. BRAXTON Filed June 27, 1942 2 Sheets-Sheet l ATTORNEY Jan. 5, 1943. D. BRAXTON 2,

LINER FORBEAQINGS FOR POLISHING WHEELS AND THE LIKE Filed June 27, 1942 2 Sheets-Sheet 2 Patented Jan. 5, 1943 OFFICE LINER'Fblt BEAnm s Fon POLISHING WHEELS AND THE LIKE Daniel Braxton, River Rouge, Mich. Application June 27,1942, Serial No. 448,798

3 Claims.

My invention relates to liners which already have been described by me in my application filed on Febru ry 5, 1942, Serial 1310429542, but includescertain features which have not been disclosed in said appncation.

The purpose of my invention is to provide liners which will be capable of radial expansion against the inner surface of the eye of the wheel into which they are to be inserted. Another purpose is to eliminate all protruding parts in the assembly, of elements which includes my liners, thus rendering s aid assembly safe in operation.

I shall now describe my invention with respect to the accompanying drawings, in which:

Fig. 1 is a longitudinal sectional view of an assembly which includes a polishing wheel and my liners;

Fig. 2 is a sectional view taken on line 2-2 of Fig. 1; r I

Fig. 3 is a sectional View taken on line 3-3 of Fig. 1;

Fig. '4 is a side elevation of the outer end of the assembly shown in Fig. 1; a

Fig. 5 is a perspective view of one of my liners; w h

Fig. '6 is a perspective view of another liner intended to be disposed within the liner shown in Fig.

Fig. 7 is a perspective view of a modified liner;

Fig. 8 is a longitudinal, sectional view of the liner shown inFig. 'I;

Fig. 9 is a side elevation of another liner intended to be seated Within the liner shown in Fig. 83 I Fig. 10 is a side elevation sembly shown in Fig. 4.

Similar 'numer'als refer to throughout the several views.

The polishing wheel l2, with which the liners of my invention are to; be used, is mounted on shaft 10 between flanges I3 and I1. Flange I3 is integrally connected with a sleeve l4 and bears against a washer l5, disposed between said sleeve and a immer o'n haa l0. Flange n is similarly, that is integrally connect d with a sleeve I8. The end of shaft 10 is threaded to accommodate a nut 20 which serves to tighten the contact between flanges [.3 and n and the wheel l2, so that the latteris held between said flanges by friction. Numeral 19 indicates a washer between sleeve l8 and nut 20. Another Washer is placed at the opposite end of the assembly shown in Fig. 1, between shoulder II and sleeve M.

of a modified assimilar parts The above arrangement of parts is now in general use, substantially as set forth. Retaining the main features of such an arrangement, I have introduced into sleeve I8 lining tubes or liners 22 and 23, one of them being concentrically seated within the other. Both liners are cylindrical in shape and are made of metal, preferably steel or bronze, their walls being approximately of an inch thick, though it must be understood that this thickness is not critical and that it may vary according to the needs of each particular case. intended to closely embrace the shaft on which it is seated, is provided with three slots 32 extending in the direction of the longitudinal axis of the liner, said slots being equidistant from each other, that is, disposed at about degrees from each other. I wish to state, however, that the number of the slots and their length may be changed when desirable. A knob 24, mounted on a pin 25, extending radially from the wall of the liner serves as a means by which the liner may be manipulated as described hereinafter.

The other liner 23, which may be considered as the outer liner, is also provided with three slots, extending in the direction of its longitudinal axis. The slots are marked 26, 26 and 26a. A number of spaced, deepnotches 21 are cut in the edge of slot 26a, While a knob 28, mounted on a pin 29 radially projecting from the wall of the liner serves as a means by which the liner may be manipulated. When the liners are in their operative position, that is, when liner 22 is withinthe liner 23, knob 24 with its supporting pin 25 are disposed within said slot 26a so that the pin maybe inserted selectively into one of said notches 2l'. It must be pointed out that when the liners are in their operative position as above described, slots 26 and 31 do not coincide but are staggered.

As indicated above, both liners, one nested within the other, are to be seated on shaft H within said sleeve 18. The latter contains a substantially rectangular opening 3|, extending in the direction of its longitudinal axis, as shown in Fig. 4. Notches 30 cut in the longitudinal side of theopening are intended to accommodate pin 29 supporting knob 28. The opening is wide enough to aiiord access to the outer liner 23, the notches 21 cut therein, and the knob 24, controlling the position of liner 22 with respect to liner 23. Both pins, 25 and 29, are long enough to allow knobs 24 and 28 to be located outside the outer surface of sleeve l8, as shown in Fig. 1.

The liner shown in Fig. '7 has certain new and desirable features not possessed by the liners The wall of liner 22 which is already described by me. One of these features consists in having the rim of the liner on the side turned to the wheel when in its operative position, curve slightly inwardly. As a result thereof, the outer diameter of the liner at its said rim indicated by numeral 33, is somewhat smaller than that of the main body of the liner. This is better shown in Fig. 8 where the liner, marked 34, is shown in section. Because of this reduced diameter at the rim, said rim forms what may be considered an entering wedge for the liner when the latter is inserted into a wheel. The liner is also provided with longitudinal slots 35 and 35a, the last named one being provided with notches 42.

The combination of the slots with the inwardly curving rim of the liner permits a degree of compression of the liner towards its center. By way of reaction the component parts of the wall of the liner, separated by slots, bear outwardly to-,

ward the inner wall of the eye of the wheel into which the liner is inserted. In this manner a more positive contact between the liner and the wheel is effected and a certain degree of automatic adjustment between the liner and the wheel is secured.

Liner 36, shown in Fig. 9, corresponds in all essential respects to the liner shown in Fig. 6, except that its entering rim is of reduced diameter like that of liner 3 1. It also contains slots which in this case are indicated by numeral 4|.

Another feature which is shown in Figs. 7 to 10, inclusive, consists in having knurled rings 31 and 40, serve as means to move and to adjust the liners. This can be done by means of pins and knobs as shown in Figs. 1 to 6, inclusive. Since, however, these pins protrude above the surface of sleeve I8, and are for this reason a source of danger to the person Working at the machine including my improvement, I have removed the knobs from pins which supported them, and have substituted for said knobs knurled rings mentioned above. These rings embrace the sleeve I8 but are attached to their respective liners, that is, ring 31 is aflixed to the outer liner 34 by means of a pin 39, while ring 38 is afiixed to what is an inner liner 36, by means of a pin 40. The rings perform the function of knobs shown in Figs. 1 to 6, inclusive, and serve to shift and adjust liners within sleeve I8.

Some attention must now be given to sleeve I4. This, as will be seen is somewhat shorter than sleeve I8 but is also provided with a longitudinal opening and notches 43, of the same shape as notches 30 in Fig. 4. At the end further remote from flange I3, sleeve I4 forms an inner shoulder I6 closely fitting over the surface of shaft II. Disposed within sleeve I4, is only one liner 44, although it will be understood that two liners exactly like in liner I8 may also be employed within sleeve I4. The single liner 44 has a wall of tapering thickness, that is tapering towards the edge which is intended to be inserted into the eye of wheel I2.

I shall now describe the operation of my liners:

Normally, both liners 22 and 23, are disposed entirely within the confines of sleeve I8. Similarly liner 44 is disposed entirely within the confines of sleeve I4. To prevent any dislocation of the liners longitudinally with respect to shaft I I, they are secured in place by means of said pins 25, 29 and 45, respectively. When it becomes necessary to make use of the liners as when the eye of the wheel has Worn out and the wheel liner 22 is turned on shaft II in clock-wise direction, sufficiently to disengage pin 25 out of notch 21. This may be done by means of knob 24. Thereupon by means of the same knob, liner 22 is thrust in the direction of the wheel I2 so that it enters into the eye of the wheel into space marked 46, between shaft II and the inner surface of said eye. This is shown in Fig. 1, which discloses liner 22 partly within said eye. Once the liner has been sufiiciently inserted into the eye, it is secured in its position against a longitudinal shift with respect to shaft II, by means of pin 25, as the latter may be guided manually by means of knob 24 into a proper notch 21, closer to wheel I2 than the one in which said pin was disposed up to then.

Subsequently-when need arises, the other liner 23, in sleeve I8, may be disengaged from its locked position within the sleeve by disengaging pin 29 may shift radially with respect to its shaft, first from notch 30 and by thrusting liner 23 by means of knob 28, into the eye of wheel I2 and over the outer surface of liner 22.

The above description refers fully to the operation of my liners shown in Figs. 7 to 10, inclusive, the only difference being that knurled rings being substituted for knobs on pins radially projecting from the liners, said liners are shifted and ad.- justed by means of said rings exactly as they can be shifted and adjusted by'means of said knobs.

The operation of liner 44 in sleeve I4 is quite obvious. The liner may be thrust into the eye of wheel I2 as far as it will proceed, whereupon it may be fixed in its position by means of pin 45 being inserted into a selected slot or notch 43.

Having thus described my invention, what I wish to claim is the following:

1. In combination, a polishing wheel, a shaft supporting the same, a sleeve on said shaft and adjoining said wheel, two concentric liners on said shaft but within the sleeve, the wall ofeach liner curving inwardly at the end adjoining the wheel and being providedwith a plurality of slots, extending from its said end inwardly in the direction of its longitudinal axis, ring means aflixe'd to the respective liners and embracing the sleeve to shift each liner separately into the eye of the wheel, and means to lock each liner against 1ongitudinal movement with respect to the shaft.

2. An improvement of the kind described, comprising in combination, a shaft, a polishing wheel mounted thereon, a circular flange bearing against the wheel on each side thereof, a sleeve on each side of the wheel, integrally connected to the respective flange, two concentric liners, at least within one of said sleeves, the wall of each liner curving inwardly at the end adjoining the wheel and being provided with a plurality of slots in the direction of the axis of the shaft, a pin radially projecting from each liner above the surface of the sleeve to move the respective liner longitudinally with respect to the shaft into the eye of the polishing wheel, and threaded means, at one end of the shaft, bearing indirectly against one of said flanges to clamp the wheel between both said flanges.

3. An improvement of the kind described, comprising in combination, a polishing wheel, a shaft supporting the same and providedwith a shoulder, two flanges coaxially seated on said shaft to clamp the polishing wheel from opposite sides, each flange being integrally connected to a sleeve seated on said shaft, at least one sleeve being provided with a longitudinal opening with cross dinal movement by insertion into a selected notch in the sleeve, a radially extending pin from the inner liner to be inserted into a selected notch in the outer liner, and threaded means at the end of the shaft bearing through intermediate means against the nearer flange to clamp the wheel, the flanges and the sleeves, in their relative position against the shoulder.

' DANIEL BRAXTON. 

